Publications (178)
The shocked gas of the BHR71 outflow observed by Herschel: indirect evidence for an atomic jet
M. Benedettini, A. Gusdorf, B. Nisini +7
In the BHR71 region, two low-mass protostars drive two distinguishable outflows. They constitute an ideal laboratory to investigate the effects of shock chemistry and the mechanism…
The hyperyoung HII region in G24.78+0.08 A1
M. T. Beltran, R. Cesaroni, L. Moscadelli +1
Context. G24.78+0.08 A1 is a 20 Msun star surrounded by a hypercompact (HC) HII region, driving a CO bipolar outflow, and located at the center of a massive rotating toroid undergo…
Herschel-HIFI detections of hydrides towards AFGL 2591 (Envelope emission versus tenuous cloud absorption)
S. Bruderer, A. O. Benz, E. F. van Dishoeck +65
The Heterodyne Instrument for the Far Infrared (HIFI) onboard the Herschel Space Observatory allows the first observations of light diatomic molecules at high spectral resolution a…
No nitrogen fractionation on 600 au scale in the Sun progenitor analogue OMC-2 FIR4
F. Fontani, G. Quaia, C. Ceccarelli +8
We show the first interferometric maps of the 14N/15N ratio obtained with the Atacama Large Millimeter Array (ALMA) towards the Solar-like forming protocluster OMC-2 FIR4. We obser…
The extremely collimated bipolar H_2O jet from the NGC 1333-IRAS 4B protostar
J. -F. Desmurs, C. Codella, J. Santiago-Garcia +2
We have performed observations of water maser emission towards a sample of low-mass protostars, in order to investigate the properties of jets associated with the earliest stages o…
Disentangling the jet emission from protostellar systems. The ALMA view of VLA1623
G. Santangelo, N. M. Murillo, B. Nisini +4
Context: High-resolution studies of class 0 protostars represent the key to constraining protostar formation models. VLA16234-2417 represents the prototype of class 0 protostars, a…
Detection of interstellar oxidaniumyl: abundant H2O+ towards the star-forming regions DR21, Sgr B2, and NGC6334
V. Ossenkopf, H. S. P. Müller, D. C. Lis +99
We identify a prominent absorption feature at 1115 GHz, detected in first HIFI spectra towards high-mass star-forming regions, and interpret its astrophysical origin. The character…
ALMA chemical survey of disk-outflow sources in Taurus (ALMA-DOT) III: The interplay between gas and dust in the protoplanetary disk of DG Tau
L. Podio, A. Garufi, C. Codella +9
Planets form in protoplanetary disks and inherit their chemical composition. It is therefore crucial to understand the disks molecular content. We aim to characterize the distribut…
A highly collimated jet from the low mass proto-star NGC1333 IRAS 4B
J. -F. Desmurs, C. Codella, J. Santiago-Garcia +2
We imaged the protostars of the nearby region NGC1333 IRAS 4 in the water maser line at 22.2 GHz by using the VLBA in phase referencing at milliarcsecond scale over four epochs spa…
The jet and the disk of the HH 212 low-mass protostar imaged by ALMA: SO and SO2 emission
L. Podio, C. Codella, F. Gueth +8
To investigate the disk formation and jet launch in protostars is crucial to comprehend the earliest stages of star and planet formation. We aim to constrain the properties of the…
Ortho-to-para ratio of interstellar heavy water
C. Vastel, C. Ceccarelli, E. Caux +65
Despite the low elemental deuterium abundance in the Galaxy, enhanced molecular D/H ratios have been found in the environments of low-mass star forming regions, and in particular t…
Herschel-PACS spectroscopy of the intermediate mass protostar NGC7129 FIRS 2
M. Fich, D. Johnstone, T. A. van Kempen +58
Aims: We present preliminary results of the first Herschel spectroscopic observations of NGC7129 FIRS2, an intermediate mass star-forming region. We attempt to interpret the observ…
Organic molecules in the protoplanetary disk of DG Tau revealed by ALMA
L. Podio, F. Bacciotti, D. Fedele +10
Planets form in protoplanetary disks and inherit their chemical compositions. It is thus crucial to map the distribution and investigate the formation of simple organics, such as f…
PdBI sub-arcsecond study of the SiO microjet in HH212 - Origin and collimation of Class 0 jets
S. Cabrit, C. Codella, F. Gueth +4
The bipolar HH 212 outflow has been mapped in SiO using the extended configuration of the Plateau de Bure Interferometer (PdBI), revealing a highly collimated SiO jet closely assoc…
Seed of Life in Space (SOLIS) XI. First measurement of nitrogen fractionation in shocked clumps of the L1157 protostellar outflow
M. Benedettini, S. Viti, C. Codella +11
The isotopic ratio of nitrogen presents a wide range of values in the Solar System and in star forming system whose origin is still unclear. Chemical reactions in the gas phase are…
First detection of ND in the solar-mass protostar IRAS16293-2422
A. Bacmann, E. Caux, P. Hily-Blant +64
In the past decade, much progress has been made in characterising the processes leading to the enhanced deuterium fractionation observed in the ISM and in particular in the cold, d…
Origin of the hot gas in low-mass protostars: Herschel-PACS spectroscopy of HH 46
T. A. van Kempen, L. E. Kristensen, G. J. Herczeg +62
'Water in Star-forming regions with Herschel' (WISH) is a Herschel Key Programme aimed at understanding the physical and chemical structure of young stellar objects (YSOs) with a f…
Close encounters of the protostellar kind in IC 1396N
M. T. Beltran, F. Massi, F. Fontani +2
We have mapped in the 2.7 mm continuum and 12CO with the PdBI the IR-dark "tail" that crosses the IC 1396N globule from south to north, and is the most extincted part of this cloud…
First detection of glycolaldehyde outside the Galactic Center
M. T. Beltran, C. Codella, S. Viti +2
Glycolaldehyde is the simplest of the monosaccharide sugars and is directly linked to the origin of life. We report on the detection of glycolaldehyde (CH2OHCHO) towards the hot mo…
Probing the gaseous disk of T Tau N with CN 5-4 lines
L. Podio, I. Kamp, C. Codella +12
We present spectrally resolved Herschel/HIFI observations of the young multiple system T Tau in atomic and molecular lines. While CO, H2O, [C II], and SO lines trace the envelope a…
Fast molecular jet from L1157-mm
M. Tafalla, R. Bachiller, B. Lefloch +4
L1157-mm powers a molecular outflow that is well-known for its shock-induced chemical activity in several hot-spots. We have studied the molecular emission toward L1157-mm searchin…
ALMA polarimetric studies of rotating jet/disk systems
F. Bacciotti, J. M. Girart, M. Padovani +9
We have recently obtained polarimetric data at mm wavelengths with ALMA for the young systems DG Tau and CW Tau, for which the rotation properties of jet and disk have been investi…
The L1157-B1 astrochemical laboratory: testing the origin of DCN
G. Busquet, F. Fontani, S. Viti +4
L1157-B1 is the brightest shocked region of the large-scale molecular outflow, considered the prototype of chemically rich outflows, being the ideal laboratory to study how shocks…
Challenging shock models with SOFIA OH observations in the high-mass star-forming region Cepheus A
A. Gusdorf, R. Guesten, K. M. Menten +13
OH is a key molecule in H2O chemistry, a valuable tool for probing physical conditions, and an important contributor to the cooling of shock regions. OH participates in the re-dist…
The 10-15 GHz radio continuum survey of the Galactic Plane with SKAO
A. Traficante, C. Mininni, F. Cavallaro +63
Star formation emerges from the complex interplay between gravity, turbulence, magnetic fields, and stellar feedback, all of which vary across spatial scales and Galactic environme…
Disks, Jets and the dawn of planets, Proceedings of the 2nd JEDI meeting
J. M. Alcala', S. Antoniucci, K. Biazzo +13
This booklet contains a collection of contributions to the meeting of the JEts and Disks at INAF (JEDI) group, which took place at the Capodimonte Observatory during 9-10 April 201…
Mass ejection and time variability in protostellar outflows: Cep E. SOLIS XVI
A. de A. Schutzer, P. R. Rivera-Ortiz, B. Lefloch +46
Protostellar jets are an important agent of star formation feedback, tightly connected with the mass-accretion process. The history of jet formation and mass-ejection provides cons…
Herschel PACS observations of shocked gas associated with the jets of L1448 and L1157
G. Santangelo, B. Nisini, S. Antoniucci +7
In the framework of the WISH key program, several H2O (E_u>190 K), high-J CO, [OI], and OH transitions are mapped with PACS in two shock positions along the two prototypical low-lu…
Deuterated water in the solar-type protostars NGC 1333 IRAS 4A and IRAS 4B
A. Coutens, C. Vastel, S. Cabrit +19
Aims. The aim of this paper is to study deuterated water in the solar-type protostars NGC1333 IRAS4A and IRAS4B, to compare their HDO abundance distribution with other star-forming…
Seeds of Life in Space (SOLIS).VII. Discovery of a cold dense methanol blob toward the L1521F VeLLO system
C. Favre, C. Vastel, I. Jimenez-Serra +40
The SOLIS (Seeds Of Life In Space) IRAM/NOEMA Large Program aims at studying a set of crucial complex organic molecules in a sample of sources, with well-known physical structure,…
ALMA chemical survey of disk-outflow sources in Taurus (ALMA-DOT) VII: the layered molecular outflow from HL Tau and its relationship with the ringed disk
F. Bacciotti, T. Nony, L. Podio +6
The ringed disk around HL Tau stands out as the iconic signature of planet formation, but the origin of the substructures is still debated. The HL Tau system also drives a powerful…
Decrease of the organic deuteration during the evolution of Sun-like protostars: the case of SVS13-A
E. Bianchi, C. Codella, C. Ceccarelli +6
We present the results of formaldehyde and methanol deuteration measurements towards the Class I low-mass protostar SVS13-A, in the framework of the IRAM 30-m ASAI (Astrochemical S…
FAUST XV. A disk wind mapped by CHOH and SiO in the inner 300 au of the NGC 1333 IRAS 4A2 protostar
M. De Simone, L. Podio, L. Chahine +23
Context. Understanding the connection between outflows, winds, accretion and disks in the inner protostellar regions is crucial for comprehending star and planet formation process.…
Astrochemistry at work in the L1157-B1 shock: acetaldehyde formation
C. Codella, F. Fontani, C. Ceccarelli +5
The formation of complex organic molecules (COMs) in protostellar environments is a hotly debated topic. In particular, the relative importance of the gas phase processes as compar…
Herschel-HIFI observations of high-J CO lines in the NGC 1333 low-mass star-forming region
U. A. Yıldız, E. F. van Dishoeck, L. E. Kristensen +60
Herschel-HIFI observations of high-J lines (up to J_u=10) of 12CO, 13CO and C18O are presented toward three deeply embedded low-mass protostars, NGC 1333 IRAS 2A, IRAS 4A, and IRAS…
Evidence of Enhanced Ionization in Protostellar Envelopes
Kamber R. Schwarz, S. Maret, M. R. A. Wells +4
Ionization is a major driver of both physical and chemical evolution in protostellar systems. Recent observations reveal substantial chemical processing in protoplanetary disks by…
FAUST. XVIII. Evidence for annular substructure in a very young Class 0 disk
M. J. Maureira, J. E. Pineda, H. B. Liu +17
When the planet formation process begins in the disks surrounding young stars is still an open question. Annular substructures such as rings and gaps in disks are intertwined with…
FAUST XII. Accretion streamers and jets in the VLA 1623--2417 protocluster
C. Codella, L. Podio, M. De Simone +23
The ALMA interferometer has played a key role in revealing a new component of the Sun-like star forming process: the molecular streamers, i.e. structures up to thousands of au long…
Herschel/HIFI discovery of interstellar chloronium (HCl)
D. C. Lis, J. C. Pearson, D. A. Neufeld +102
We report the first detection of chloronium, HCl, in the interstellar medium, using the HIFI instrument aboard the \emph{Herschel} Space Observatory. The li…
HERSCHEL-HIFI spectroscopy of the intermediate mass protostar NGC7129 FIRS 2
D. Johnstone, M. Fich, C. McCoey +58
HERSCHEL-HIFI observations of water from the intermediate mass protostar NGC7129 FIRS 2 provide a powerful diagnostic of the physical conditions in this star formation environment.…
A detailed temperature map of the archetypal protostellar shocks in L1157
S. Feng, H. B. Liu, P. Caselli +5
We present sensitive (1,1)--(7,7) line images from the Karl G. Jansky Very Large Array toward successive shocks, which are associated with the blueshifted outflow lobe d…
Evolution and excitation conditions of outflows in high-mass star-forming regions
A. Sanchez-Monge, A. Lopez-Sepulcre, R. Cesaroni +5
Theoretical models suggest that massive stars form via disk-mediated accretion, with bipolar outflows playing a fundamental role. A recent study toward massive molecular outflows h…
Candidate Rotating Toroids around High-Mass (Proto)Stars
R. S. Furuya, R. Cesaroni, S. Takahashi +3
Using the OVRO, Nobeyama, and IRAM mm-arrays, we searched for ``disk''-outflow systems in three high-mass (proto)star forming regions: G16.59-0.05, G23.01-0.41, and G28.87+0.07. Th…
Warm SiO gas in molecular bullets associated with protostellar outflows
B. Nisini, C. Codella, T. Giannini +4
In this paper we present the first SiO multiline analysis (from J=2-1 to J=11-10) of the molecular bullets along the outflows of the Class 0 sources L1448-mm and L1157-mm, obtained…
FAUST XIII. Dusty cavity and molecular shock driven by IRS7B in the Corona Australis cluster
G. Sabatini, L. Podio, C. Codella +54
The origin of the chemical diversity observed around low-mass protostars probably resides in the earliest history of these systems. We aim to investigate the impact of protostellar…
Chemical survey of Class I protostars with the IRAM-30m
S. Mercimek, C. Codella, L. Podio +6
Class I protostars are a bridge between Class 0 protostars, and Class II protoplanetary disks. Recent studies show gaps and rings in the dust distribution of disks younger than 1 M…
FAUST IX. Multi-band, multi-scale dust study of L1527 IRS. Evidence for dust properties variations within the envelope of a Class 0/I YSO
L. Cacciapuoti, E. Macias, A. J. Maury +25
Early dust grain growth in protostellar envelopes infalling on young discs has been suggested in recent studies, supporting the hypothesis that dust particles start to agglomerate…
Four New Dense Molecular Cores in the Taurus Molecular Cloud (TMC): Ammonia and Cyanodiacetylene Observations
C. Codella, R. Welser, C. Henkel +2
Trying to obtain a more complete picture of star forming regions in the Taurus Molecular Cloud, four newly discovered dense cores (L1521D, L1521F, L1524, L1507A) are identified and…
The chemistry of star and planet formation with SKA
C. Codella, L. Testi, G. Umana +2
In this contribution, we aim to summarise the efforts of the Italian SKA scientific community in conducting surveys of star-forming regions within our Galaxy, in the development of…
Characterizing young protostellar disks with the CALYPSO IRAM-PdBI survey: large Class 0 disks are rare
A. J. Maury, Ph. André, L. Testi +15
Understanding the formation mechanisms of protoplanetary disks and multiple systems, and their pristine properties, is a key question for modern astrophysics. The properties of the…
Hot methanol from the inner region of the HH 212 protostellar system
S. Leurini, C. Codella, S. Cabrit +9
The mechanisms leading to the formation of disks around young stellar objects (YSOs) and to the launching of the associated jets are crucial to the understanding of the earliest st…
Organic chemistry in the protosolar analogue HOPS-108: Environment matters
L. Chahine, A. López-Sepulcre, R. Neri +10
Hot corinos are compact regions around solar-mass protostellar objects that are very rich in interstellar complex organic molecules (iCOMs). They are believed to represent the very…
Protostellar chimney flues: are jets and outflows lifting submillimetre dust grains from discs into envelopes?
L. Cacciapuoti, L. Testi, L. Podio +7
Low dust opacity spectral indices () measured in the inner envelopes of class 0/I young stellar objects (age yr) have been interpreted as the presence of (su…
Herschel observations of the hydroxyl radical (OH) in young stellar objects
S. F. Wampfler, G. J. Herczeg, S. Bruderer +58
Water in Star-forming regions with Herschel (WISH) is a Herschel Key Program investigating the water chemistry in young stellar objects (YSOs) during protostellar evolution. Hydrox…
Angular momentum profiles of Class 0 protostellar envelopes
M. Gaudel, A. J. Maury, A. Belloche +10
[abridged] Understanding how the infalling gas redistribute most of its initial angular momentum inherited from prestellar cores before reaching the stellar embryo is a key questio…
Molecular complexity of young solar analogues
E. Bianchi, M. De Simone, G. Sabatini +3
How does molecular complexity emerge and evolve during the process leading to the formation of a planetary system? Astrochemistry is experiencing a golden age, marked by significan…
Rotating toroids in G10.62-0.38, G19.61-0.23, and G29.96-0.02
M. T. Beltran, R. Cesaroni, R. Neri +1
Context. In recent years, we have detected clear evidence of rotation in more than 5 hot molecular cores (HMCs). Their identification is confirmed by the fact that the rotation axe…
Phosphorus-bearing molecules in solar-type star forming regions: First PO detection
B. Lefloch, C. Vastel, S. Viti +7
As part of the Large Program ASAI (Astrochemical Surveys At IRAM), we have used the IRAM 30m telescope to lead a systematic search for the emission of rotational transitions of P-b…
Probing outflow physics through CHCN and CHOH chemistry
L. Giani, D. Zaremba, M. De Simone +4
Chemical correlations between molecules provide powerful diagnostics to probe the physical conditions of protostellar outflows. In particular, the relationship between methanol (CH…
Hot methanol in the [BHB2007] 11 protobinary system: hot corino versus shock origin? : FAUST V
C. Vastel, F. Alves, C. Ceccarelli +63
Methanol is a ubiquitous species commonly found in the molecular interstellar medium. It is also a crucial seed species for the building-up of the chemical complexity in star formi…
Wide field CO J = 3->2 mapping of the Serpens Cloud Core
O. Dionatos, B. Nisini, C. Codella +1
Context. Outflows provide indirect means to get an insight on diverse star formation associated phenomena. On scales of individual protostellar cores, outflows combined with intrin…
VLA cm-wave survey of young stellar objects in the Oph A cluster: constraining extreme UV- and X-ray-driven disk photo-evaporation -- A pathfinder for Square Kilometre Array studies
A. Coutens, H. B. Liu, I. Jiménez-Serra +28
Observations of young stellar objects (YSOs) in centimeter bands can probe the continuum emission from growing dust grains, ionized winds, and magnetospheric activity, which are in…
Deuterated methanol on Solar System scale around the HH212 protostar
E. Bianchi, C. Codella, C. Ceccarelli +13
Context: Methanol is thought to be mainly formed during the prestellar phase and its deuterated form keeps memory of the conditions at that epoch. Thanks to the unique combination…
Chemical differentiation along the CepA-East outflows
C. Codella, R. Bachiller, M. Benedettini +3
We present the results of a multiline survey at mm-wavelengths of the Cepheus A star forming region. Four main flows have been identified: three pointing in the SW, NE, and SE dire…
Astrochemical evolution along star formation: Overview of the IRAM Large Program ASAI
B. Lefloch, R. Bachiller, C. Ceccarelli +27
Evidence is mounting that the small bodies of our Solar System, such as comets and asteroids, have at least partially inherited their chemical composition from the first phases of…
Sensitive limits on the abundance of cold water vapor in the DM Tau protoplanetary disk
E. A. Bergin, M. R. Hogerheijde, C. Brinch +61
We performed a sensitive search for the ground-state emission lines of ortho- and para-water vapor in the DM Tau protoplanetary disk using the Herschel/HIFI instrument. No strong l…
Binding Energies of Interstellar Relevant S-bearing Species on Water Ice Mantles: A Quantum Mechanical Investigation
J. Perrero, J. Enrique-Romero, S. Ferrero +5
Binding energies (BEs) are one of the most important parameters for astrochemical modeling determining, because they govern whether a species stays in the gas-phase or is frozen on…
The formation of ethylene glycol and other complex organic molecules in star-forming regions
V. M. Rivilla, M. T. Beltrán, R. Cesaroni +3
We study the molecular abundance and spatial distribution of the simplest sugar alcohol, ethylene glycol (EG), the simplest sugar glycoladehyde (GA), and other chemically related c…
First evidence for molecular interfaces between outflows and ambient cloud in high-mass star forming regions?
C. Codella, S. Viti, D. A. Williams +1
We present new observations of the CepA-East region of massive star formation and describe an extended and dynamically distinct feature not previously recognised. This feature is p…
FAUST XVII: Super deuteration in the planet forming system IRS 63 where the streamer strikes the disk
L. Podio, C. Ceccarelli, C. Codella +55
Recent observations suggest that planets formation starts early, in protostellar disks of yrs, which are characterized by strong interactions with the environment, e.g.,…
Water distribution in shocked regions of the NGC1333-IRAS4A protostellar outflow
G. Santangelo, B. Nisini, C. Codella +11
We present the study of the H2O spatial distribution at two bright shocked regions along IRAS4A, one of the strongest H2O emitters among the Class 0 outflows. We obtained Herschel-…
A search for Cyanopolyynes in L1157-B1
E. Mendoza, B. Lefloch, C. Ceccarelli +10
We present here a systematic search for cyanopolyynes in the shock region L1157-B1 and its associated protostar L1157-mm in the framework of the Large Program "Astrochemical Survey…
HCN/HNC chemistry in shocks: a study of L1157-B1 with ASAI
B. Lefloch, G. Busquet, S. Viti +9
HCN and its isomer HNC play an important role in molecular cloud chemistry and the formation of more complex molecules. We investigate here the impact of protostellar shocks on the…
SOLIS. XIX. The chemically rich SVS13-B protostellar jet
C. Codella, E. Bianchi, L. Podio +4
As part of the IRAM NOEMA Large Program SOLIS, we imaged the protostellar sources SVS13-A and SVS13-B in SiO, SO, CS, and CH3OH at a spatial resolution of 2"-3" (600-900 au). The C…
Shedding light on the formation of the pre-biotic molecule formamide with ASAI
A. López-Sepulcre, Ali A. Jaber, E. Mendoza +9
Formamide (NH2CHO) has been proposed as a pre-biotic precursor with a key role in the emergence of life on Earth. While this molecule has been observed in space, most of its detect…
Water in massive star-forming regions: HIFI observations of W3 IRS5
L. Chavarria, F. Herpin, T. Jacq +58
We present Herschel observations of the water molecule in the massive star-forming region W3 IRS5. The o-H17O 110-101, p-H18O 111-000, p-H2O 22 202-111, p-H2O 111-000, o-H2O 221-21…
Herschel/HIFI observations of spectrally resolved methylidyne signatures toward the high-mass star-forming core NGC6334I
M. H. D. van der Wiel, F. F. S. van der Tak, D. C. Lis +65
In contrast to extensively studied dense star-forming cores, little is known about diffuse gas surrounding star-forming regions. We study molecular gas in the high-mass star-formin…
The B1 shock in the L1157 outflow as seen at high spatial resolution
M. Benedettini, S. Viti, C. Codella +7
We present high spatial resolution (750 AU at 250 pc) maps of the B1 shock in the blue lobe of the L1157 outflow in four lines: CS (3-2), CH3OH (3_K-2_K), HC3N (16-15) and p-H2CO (…
Seeds of Life in Space (SOLIS). X. Interstellar Complex Organic Molecules in the NGC 1333 IRAS 4A outflows
M. De Simone, C. Codella, C. Ceccarelli +11
Aims: A unique environment to study how interstellar Complex Organic Molecules (iCOMs) can be formed is the shocked gas along low-mass protostellar outflows, as the dust mantles co…
FAUST XXVI. The dust opacity spectral indices of protostellar envelopes bridge the gap between interstellar medium and disks
Luca Cacciapuoti, L. Testi, A. J. Maury +36
The sub-millimetre dust opacity spectral index is a critical observable to constrain dust properties, such as the maximum grain size of an observed dust population. It has been wid…
The census of interstellar complex organic molecules in the Class I hot corino of SVS13-A
E. Bianchi, C. Codella, C. Ceccarelli +12
We present the first census of the interstellar Complex Organic Molecules (iCOMs) in the low-mass Class I protostar SVS13-A, obtained by analysing data from the IRAM-30m Large Proj…
Complex organic molecules in protostellar environments in the SKA era
C. Codella, L. Podio, F. Fontani +10
Molecular complexity builds up at each step of the Sun-like star formation process, starting from simple molecules and ending up in large polyatomic species. Complex organic molecu…
A highly-collimated SiO jet in the HH212 protostellar outflow
C. Codella, S. Cabrit, F. Gueth +4
We mapped the HH212 Class 0 outflow in SiO(2--1, 5--4) and continuum using the PdBI in its extended configurations. The unprecedented angular resolution (down to 0.34") allows accu…
Italian Science Case for ALMA Band 2+3
M. T. Beltran, E. Bianchi, J. Brand +18
The Premiale Project "Science and Technology in Italy for the upgraded ALMA Observatory - iALMA" has the goal of strengthening the scientific, technological and industrial Italian…
The ALMA view of the protostellar system HH212 - The wind, the cavity, and the disk
C. Codella, S. Cabrit, F. Gueth +8
Context: Because it is viewed simply edge-on, the HH212 protostellar system is an ideal laboratory for studying the interplay of infall, outflow, and rotation in the earliest stage…
Enlightening the chemistry of infalling envelopes and accretion disks around Sun-like protostars: the ALMA FAUST project
C. Codella, C. Ceccarelli, C. Chandler N. Sakai +2
The huge variety of planetary systems discovered in recent decades likely depends on the early history of their formation. In this contribution we introduce the FAUST Large Program…
Molecular outflows towards O-type young stellar objects
A. Lopez-Sepulcre, C. Codella, R. Cesaroni +2
We have searched for massive molecular outflows in a sample of high-mass star forming regions, and we have characterised both the outflow properties and those of their associated m…
FAUST XX. The chemical structure and temperature profile of the IRAS 4A2 hot corino at 20-50 au
J. Frediani, M. De Simone, L. Testi +20
Young low-mass protostars often possess hot corinos, compact, hot and dense regions bright in interstellar Complex Organic Molecules (iCOMs). Besides of their prebiotic role, iCOMs…
SOLIS IV. Hydrocarbons in the OMC-2 FIR 4 region, a probe of energetic particle irradiation of the region
C. Favre, C. Ceccarelli, A. López-Sepulcre +16
We report new interferometric images of cyclopropenylidene, c-CH, towards the young protocluster OMC-2 FIR\,4. The observations were performed at 82 and 85 GHz with the NOr…
Jet multiplicity in the proto-binary system NGC1333-IRAS4A. The detailed CALYPSO IRAM-PdBI view
G. Santangelo, C. Codella, S. Cabrit +10
Owing to the paucity of sub-arcsecond (sub)mm observations required to probe the innermost regions of newly forming protostars, several fundamental questions are still being debate…
First results from the CALYPSO IRAM-PdBI survey. I. Kinematics of the inner envelope of NGC1333-IRAS2A
S. Maret, A. Belloche, A. J. Maury +5
The structure and kinematics of Class 0 protostars on scales of a few hundred AU is poorly known. Recent observations have revealed the presence of Keplerian disks with a diameter…
Molecules with a peptide link in protostellar shocks: a comprehensive study of L1157
E. Mendoza, B Lefloch, A. López-Sepulcre +4
Interstellar molecules with a peptide link -NH-C(=O)-, like formamide (NHCHO), acetamide (NHCOCH) and isocyanic acid (HNCO) are particularly interesting for their poten…
Heavy water around the L1448-mm protostar
C. Codella, C. Ceccarelli, B. Nisini +5
Context: L1448-mm is the prototype of a low-mass Class 0 protostar driving a high-velocity jet. Given its bright H2O spectra observed with ISO, L1448-mm is an ideal laboratory to o…
Seeds Of Life In Space (SOLIS): The organic composition diversity at 300--1000 au scale in Solar-type star forming regions
C. Ceccarelli, P. Caselli, F. Fontani +43
Complex organic molecules have been observed for decades in the interstellar medium. Some of them might be considered as small bricks of the macromolecules at the base of terrestri…
First image of the L1157 molecular jet by the CALYPSO IRAM-PdBI survey
L. Podio, C. Codella, F. Gueth +12
Fast jets are thought to be a crucial ingredient of star formation because they might extract angular momentum from the disk and thus allow mass accretion onto the star. However, i…
Nature of shocks revealed by SOFIA OI observations in the Cepheus E protostellar outflow
A. Gusdorf, S. Anderl, B. Lefloch +12
Protostellar jets and outflows are key features of the star-formation process, and primary processes of the feedback of young stars on the interstellar medium. Understanding the un…
FAUST. XXVIII. High-Resolution ALMA Observations of Class 0/I Disks: Structure, Optical Depths, and Temperatures
M. J. Maureira, J. E. Pineda, H. B. Liu +22
We present high-resolution (~7.5 au) ALMA observations at 1.3 and 3 mm of 16 disks around Class 0/I protostars across multiple star-forming regions and a variety of multiplicities,…
SiO outflows in high-mass star forming regions: A potential chemical clock?
A. López-Sepulcre, C. M. Walmsley, R. Cesaroni +7
Some theoretical models propose that O-B stars form via accretion, in a similar fashion to low-mass stars. Jet-driven molecular outflows play an important role in this scenario, an…
First spectrally-resolved H observations towards HH 54 / Low HO abundance in shocks
G. Santangelo, S. Antoniucci, B. Nisini +11
Context: Herschel observations suggest that the HO distribution in outflows from low-mass stars resembles the H emission. It is still unclear which of the different excitat…
FAUST-XXII. Deuteration in the VLA1623-2417 protostellar hot-corinos, cavities, and streamers
S. Mercimek, C. Codella, L. Podio +13
The study of deuterium fractionation is a valuable tool for reconstructing our chemical history from the early prestellar stages to the formation of planets. In the context of the…